Unlock instant, AI-driven research and patent intelligence for your innovation.

Optical storage system having integrated laser driver signal processor

A laser driving signal and processing circuit technology, applied in the recording signal processing, optical recording head, recording/reproducing by optical methods, etc., can solve the problems of unable to obtain the driving current waveform, drop, etc., to reduce the number and reduce the distortion the effect of sensitivity

Inactive Publication Date: 2008-09-17
MEDIATEK HEFEI
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the capacity and speed of the disc increase, the quality of the reproduction signal (reproduction signal) used to provide the information recorded in the disc often decreases; and because of the degradation of the control signal waveform and the delay between different control signals Difference (that is, skew (skew)), often makes it impossible to obtain accurate drive current waveforms

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optical storage system having integrated laser driver signal processor
  • Optical storage system having integrated laser driver signal processor
  • Optical storage system having integrated laser driver signal processor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0104] figure 2 It is an overall functional block diagram of an embodiment of the optical storage device of the present invention. The optical storage device 200 of this embodiment includes a control unit 202 and an optical read / write unit 204 . Such as figure 2 As shown, the control unit 202 includes a controller (in this embodiment, it is a digital signal processor (DSP)) 208, a central processing unit (CPU) 209, an encoder unit 210 and a decoder unit 212 . The optical read / write unit 204 includes a first laser diode LD1 , a second laser diode LD2 , a front monitor diode FMD, a photo sensor integrated circuit (PDIC) 214 and a laser driving signal processing circuit 216 . The laser driving signal processing circuit 216 includes a laser driver 218 , a sensing signal processing module 220 and a read signal processing module 222 . The optical read / write unit 204 can move across an optical medium 224 and is connected to the control unit 202 through a flexible cable 203 . B...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an optical storage apparatus which comprises an optical read-write unit and a control unit; wherein the optical read-write unit comprises a sensor, a laser diode and a laser driving signal processing circuit; the laser driving signal processing circuit comprises: a signal sensing processing module for outputting optical read-write signal received by the sensor; a read-write signal processing module for signal processing and generating control signal or synthesizing signal according to the read-write signal; the control unit being jointed with the optical read-write unit for controlling the optical read-write unit and decoding data generated by optical media. The invention has the advantages of reducing the signal content necessarily delivered by soft cable from optical read-write unit to a control unit, and of lowering signal distortion sensitivity.

Description

technical field [0001] The invention relates to an optical storage device, in particular to an optical storage device with an integrated laser drive signal processing circuit and a laser drive signal processing circuit arranged in an optical read-write unit of an optical storage device. Background technique [0002] In the field of related products of various optical discs (such as CD or DVD), there is an increasing trend no matter the storage capacity of the optical disc or the data transmission speed of the optical storage system. With the increase of the storage capacity of the optical disc, "mark" (mark) and "space" (space) respectively corresponding to '1' and '0' also need to be generated on the optical disc in a more delicate and accurate manner. [0003] In order to produce more delicate and accurate marks and blanks, it is necessary to use a mark recording waveform with a multi-pulse form as a driving current for a semiconductor laser when recording. Waveform (driv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/125G11B7/005G11B20/00
CPCG11B20/00086G11B2220/2537G11B20/0021G11B20/10425G11B2020/1461G11B20/10
Inventor 许智钦陈志远洪英哲
Owner MEDIATEK HEFEI